Abstract: The present invention proposes a scheme for realizing a structure and a technology which can support direct linkage between services in an inter-MEC environment, the services being mounted in different MEC systems, respectively.

Abstract: When a user equipment accessing an access network transmits an emergency call initiating request message to an E-CSCF, the E-CSCF transmits a message requesting for retrieving a current location of the user equipment to a location retrieval unit and the location retrieval unit measures the current location of the user equipment using the access network and transmits a message including the measured location information to the E-CSCF. Then, the E-CSCF establishes a communication channel between the user equipment and an emergency center corresponding to the current location information of the user equipment using a location service response message. Accordingly, it is possible to efficiently provide an emergency location service regardless of structures of networks.

Abstract: A protocol for a peer power save mode (PPSM) in a tunneled direct link setup (TDLS) wireless network and a system therefor are provided. A station (STA) set up a TDLS link can send a frame having a power management bit set to a peer STA to enter into a power save mode (PSM). In this case, the station entering into the PSM operates in a PPSM client mode. When the peer STA operates in the PPSM client mode, the STA can operate in the PPSM access point (AP) mode or can enter into the PPSM client mode. The STA operating in the PPSM AP mode buffers data for the STA operating in the PPSM client mode and informs the peer STA of information indicating that there is buffered data by the use of a peer traffic indication frame or the like. In principle, a U-APSD procedure can be applied to the transmission of data through a direct link from the STA operating in the PPSM AP mode to the STA operating in the PPSM client mode.

Abstract: A method for transmitting location information includes the steps of: a) receiving a start message including MO (mobile originated location request) mode information from a first terminal; b) calculating location information of the first terminal; and c) transmitting the calculated first terminal's location information according to the MO (mobile originated location request) mode information. A method for transmitting location information in a Secure User Plane Location (SUPL) protocol of a first SUPL Enabled Terminal (SET), a SUPL Location Platform (SLP), and a second SUPL Enabled Terminal (SET) includes the steps of: a) receiving a start message including MO (mobile originated location request) mode information from the first SET; b) calculating location information of the first SET; and c) transmitting the calculated first SET's location information to any one of the first SET and the second SET according to the MO (mobile originated location request) mode information.

Abstract: Disclosed is a signal processing method and apparatus in MIMO system. In a mobile communication system having a plurality of transmitting antennas, the present invention includes the steps of receiving a feedback signal including status information of at least one channel, segmenting one of the first data blocks to segment into at least one or more of the second data blocks, attaching a CRC to each of the at least one or more of the second data blocks, allocating the at least one or more second data blocks to a plurality of the transmitting antennas, respectively, and transmitting the at least one or more of the second data blocks. In a mobile communication system having a plurality of receiving antennas, the present invention includes the steps of receiving at least one data block including a CRC or dummy bits, acquiring channel status information using the CRC or dummy bits, and transmitting the channel status information.

Abstract: Disclosed is a wireless network system and a method for transmitting and receiving various information and data related to broadcast or multicast services in a wireless network.

Abstract: Provided are a method and a system for providing an emergency location service using an IMS core. In the method, when the IMS core receives an emergency call initiating request message from a user equipment, the IMS core transmits a location service request message requesting for retrieving a location of the user equipment to a location retrieval subsystem in response to the emergency call initiating request message. Then, when the IMS core receives current location information of the user equipment, which is acquired through an access to the user equipment by the location retrieval subsystem having received the location service request message, from the location retrieval subsystem, the IMS core selects an emergency center on the basis of the current location information and transmits the emergency call initiating request message including the current location information to the selected emergency center. Then, an emergency call is established between the user equipment and the emergency center.

Abstract: The present invention relates to perform presence service in a wireless communication system that is available to a mobile device.

Abstract: Disclosed is a wireless network system and a method for sending and receiving various information and data related to broadcast or multicast services in a wireless network.

Abstract: Disclosed is a wireless network system and a method for sending and receiving various information and data related to broadcast or multicast services in a wireless network.

Abstract: The present invention relates to perform presence service in a wireless communication system that is available to a mobile device.

Abstract: Disclosed is a signal processing method and apparatus in MIMO system. In a mobile communication system having a plurality of transmitting antennas, the present invention includes the steps of receiving a feedback signal including status information of at least one channel, segmenting one of the first data blocks to segment into at least one or more of the second data blocks, attaching a CRC to each of the at least one or more of the second data blocks, allocating the at least one or more second data blocks to a plurality of the transmitting antennas, respectively, and transmitting the at least one or more of the second data blocks. In a mobile communication system having a plurality of receiving antennas, the present invention includes the steps of receiving at least one data block including a CRC or dummy bits, acquiring channel status information using the CRC or dummy bits, and transmitting the channel status information.

Abstract: When a user equipment accessing an access network transmits an emergency call initiating request message to an E-CSCF, the E-CSCF transmits a message requesting for retrieving a current location of the user equipment to a location retrieval unit and the location retrieval unit measures the current location of the user equipment using the access network and transmits a message including the measured location information to the E-CSCF. Then, the E-CSCF establishes a communication channel between the user equipment and an emergency center corresponding to the current location information of the user equipment using a location service response message. Accordingly, it is possible to efficiently provide an emergency location service regardless of structures of networks.

Abstract: A protocol for a peer power save mode (PPSM) in a tunneled direct link setup (TDLS) wireless network and a system therefor are provided. A station (STA) set up a TDLS link can send a frame having a power management bit set to a peer STA to enter into a power save mode (PSM). In this case, the station entering into the PSM operates in a PPSM client mode. When the peer STA operates in the PPSM client mode, the STA can operate in the PPSM access point (AP) mode or can enter into the PPSM client mode. The STA operating in the PPSM AP mode buffers data for the STA operating in the PPSM client mode and informs the peer STA of information indicating that there is buffered data by the use of a peer traffic indication frame or the like. In principle, a U-APSD procedure can be applied to the transmission of data through a direct link from the STA operating in the PPSM AP mode to the STA operating in the PPSM client mode.

Abstract: Disclosed is a wireless network system and a method for transmitting and receiving various information and data related to broadcast or multicast services in a wireless network.

Abstract: Disclosed is a wireless network system and a method for sending and receiving various information and data related to broadcast or multicast services in a wireless network.

Abstract: Disclosed is a wireless network system and a method for sending and receiving various information and data related to broadcast or multicast services in a wireless network.

Abstract: A method of mobile communication including a transmitter having multiple transmitters and a receiver having multiple receivers. The method includes adding a cyclic redundancy check (CRC) code to a data block to be transmitted and spatially segmenting the data block according to a modulation scheme and a coding rate of each respective transmit antenna of the multiple antennas.

Abstract: A method for transmitting signal in a mobile communication system allocates symbols which will be transmitted to transmitting antennas appropriately as considering detection efficiencies of symbols on a higher order modulation constellation and correlation between antennas, and thereby independent symbol transmission can be made and independence between antennas can be improved to improve accuracy of symbol detection on a receiving end and signal transmitting function of the system can be improved. Therefore, a pair of symbols having the longest distance between symbols is arranged to a pair of antennas having higher correlation and a pair of symbols having the shortest distance between symbols is arranged to a pair of antennas having lower correlation. Also, symbols having higher detection efficiency are allocated to antennas having higher correlation and symbols having lower detection efficiency are allocated to antennas having lower correlation.

Abstract: A closed-loop STTD system extended from an open-loop STTD system adopting four antennas transmission diversity technique and its signal transmitting method are disclosed. The signal transmitting method in a closed-loop space-time transmit diversity (STTD) system having a plurality of transmission antennas, includes: space-time coding symbols to be transmitted; classifying the coded symbols to certain groups; and multiplying different weight values to each transmission symbol group and transmitting them.